CVE-2026-89157
Quick assessment
Affected
PCRE PCRE2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 32 位平台上，PCRE2 10.48 之前版本中，当攻击者能够提供一个较大的正则表达式模式时， 函数中存在一个越界写（out-of-bounds write）漏洞。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-89157
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-89157
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-89157 (1)
Vendor Pages for CVE-2026-89157 (1)
Same Patch Batch · PCRE · 2026-09-11 · 6 CVEs total
| CVE-2026-89161 | 7.4 HIGH | PCRE2 10.48前 pcre2_jit_match 内存错误 |
| CVE-2026-89158 | 6.5 MEDIUM | PCRE2 10.48前32位整数溢出越界写 |
| CVE-2026-89160 | 3.7 LOW | PCRE2 10.48之前 越界读取 |
| CVE-2026-89156 | 2.9 LOW | PCRE2 10.48 前 JIT 回退致越界读 |
| CVE-2026-89162 | 2.9 LOW | PCRE2 10.48之前信息泄露漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-190
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V. Comments for CVE-2026-89157
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